WebSockets es una tecnología avanzada que hace posible abrir una sesión de comunicación interactiva entre el navegador del usuario y un servidor. Con esta API, puede enviar mensajes a un servidor y recibir respuestas controladas por eventos sin tener que consultar al servidor para una respuesta.
DocumentaCión
- Escribir aplicaciones cliente WebSocket
- Una guía tutorial para escribir clientes WebSocket para ejecutarse en el browser.
- Referencia WebSockets
- Una referencia de la API de cliente WebSocket.
- (TBD) El protocolo WebSocket
- Una referencia del protocolo WebSocket.
- (TBD) Escribiendo servidores WebSocket
- Una guía para escribir código del lado del servidor para manejar el protocolo WebSocket.
Herramientas
- Socket.IO: Una poderosa multi-plataforma API WebSocket para Node.js.
- WebSocket-Node: Un servidor WebSocket API implementado para Node.js.
- Una lista más extensiva de frameworks y bibliotecas aquí
Temas RELACIONADOS
Ver también
- RFC 6455 - The WebSocket Protocol
- WebSocket API Specification
- Server-Sent Events
- WebSocket.us - a community-run, not-for-profit site about WebSocket
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Version -76 support | 6 | 4.0 (2.0) | Not supported | 11.00 (disabled) | 5.0.1 |
| Protocol version 7 support | Not supported | 6.0 (6.0) Moz |
Not supported | Not supported | Not supported |
| Protocol version 10 support | 14 | 7.0 (7.0) Moz |
HTML5 Labs | ? | ? |
| RFC 6455 Support (IETF Draft 17) | 16 | 11.0 (11.0) | 10 | 12.10 | ? |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Version -76 support | ? | ? | ? | ? | ? |
| Protocol version 7 support | ? | ? | ? | ? | ? |
| Protocol version 8 support (IETF draft 10) | ? | 7.0 (7.0) | ? | ? | ? |
| RFC 6455 Support (IETF Draft 17) | 16 | 11.0 (11.0) | ? | 12.10 | ? |
Gecko notes
WebSockets support in Firefox is continuing to track the evolving WebSocket specification. Firefox 6 implements version 7 of the underlying protocol, while Firefox 7 implements version 8 (as specified by IETF draft 10). Firefox mobile received WebSocket support in Firefox mobile 7.0.
Gecko 6.0
Prior to Gecko 6.0 (Firefox 6.0 / Thunderbird 6.0 / SeaMonkey 2.3), there was, incorrectly, a WebSocket object that some sites were thinking implied that WebSocket services were not prefixed; this object has been renamed to MozWebSocket.
Gecko 7.0
Starting in Gecko 7.0 (Firefox 7.0 / Thunderbird 7.0 / SeaMonkey 2.4), the network.websocket.max-connections preference is used to determine the maximum number of WebSocket connections that can be open at a time. The default value is 200.
Gecko 8.0
Starting in Gecko 8.0 (Firefox 8.0 / Thunderbird 8.0 / SeaMonkey 2.5), the deflate-stream extension to the WebSocket protocol has been disabled, since it's been deprecated from the specification drafts. This resolves incompatibilities with some sites.
Gecko 11.0
Prior to Gecko 11.0, both incoming and outgoing messages were limited to 16 MB in size. They may now be up to 2 GB in size. Note, however, that memory limitations (especially on mobile devices) make that a theoretical maximum, not a practical one. In reality, transfers of that size will fail on devices that don't have enough memory.
Additionally, ArrayBuffer send and receive support for binary data has been implemented.
Starting in Gecko 11.0, the WebSocket API is no longer prefixed.